Engineering Properties of Self Compacting Concrete Incorporating Metakaolin and Rice Husk Ash: A Review

The paper is concerned with selecting materials for concrete that is both reducing the carbon emission and sustainable and the issues associated with achieving this. As the cement industry is the second-largest industrial emitter of carbon after the steel industry. The utilization of by-products, such as metakaolin and rice husk ash, as a partial replacement for cement can contribute to a series of beneficial performances by demonstrating economic, environmental, and technical advantages because it provides a new use for waste materials, produces cheaper mortar and concrete materials for low cost construction, and reduces carbon emissions. This paper reports a study carried out to investigate the effects of using metakaolin and rice husk ash. For this purpose, metakaolin was used to replace cement by weight in different proportions and fine aggregates were replaced by rice husk ash in proportion. Different properties such as compressive strength, durability properties and other properties at fresh state and hardened state are compared. Result showed significance improvement with the use of metakaolin and rice husk ash. Micro-structural analysis further confirmed the positive trend of results.